<!DOCTYPE html>
<link rel="help" href="https://crbug.com/363567">
<link rel="help" href="https://issues.chromium.org/issues/40360947">
<style>
  div { background: url(#); }
  div { background: -webkit-image-set(url(#) 1x); }
  div { background: image-set(url(#) 1x); }
</style>
<body>
  <div style="transition: 1s">This test passes if it does not crash.</div>
</body>
<script>
window.onload = () => {
  document.styleSheets[0].deleteRule(2);
  document.styleSheets[0].deleteRule(1);
};
</script>
